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2308971431 = 135915431951
BaseRepresentation
bin1000100110100000…
…0001101110100111
312221220201220100102
42021220001232213
514212044041211
61021041134315
7111134635064
oct21150015647
95856656312
102308971431
11a85399458
1254532a39b
132aa4967b0
1417c925c6b
15d7a94a3b
hex89a01ba7

2308971431 has 16 divisors (see below), whose sum is σ = 2531665920. Its totient is φ = 2092802400.

The previous prime is 2308971407. The next prime is 2308971437. The reversal of 2308971431 is 1341798032.

It is not a de Polignac number, because 2308971431 - 26 = 2308971367 is a prime.

It is a super-2 number, since 2×23089714312 = 10662698138348375522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2308971437) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1182506 + ... + 1184456.

It is an arithmetic number, because the mean of its divisors is an integer number (158229120).

Almost surely, 22308971431 is an apocalyptic number.

2308971431 is a deficient number, since it is larger than the sum of its proper divisors (222694489).

2308971431 is a wasteful number, since it uses less digits than its factorization.

2308971431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3566.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 2308971431 is about 48051.7578346516. The cubic root of 2308971431 is about 1321.7201768131.

The spelling of 2308971431 in words is "two billion, three hundred eight million, nine hundred seventy-one thousand, four hundred thirty-one".

Divisors: 1 13 59 767 1543 1951 20059 25363 91037 115109 1183481 1496417 3010393 39135109 177613187 2308971431